Note: This story was dynamically reformatted for online reading convenience.
 
 Tandy burst through the living room door and ran up the stairs.  She
dropped her jacket and purse in the hall right outside her brother's door
as she ran toward the bathroom door.  She felt as if she was about to
burst. Once she had emptied her bladder and washed her hands she went back
into the hall to get her things.  Inside Jack's room, she could hear him
moaning.  She moved closer to the slightly ajar door and peeked inside.

   There sat Jack at his computer looking at pictures of naked women and
men having sex.  Tandy could not believe what she was seeing.  His fist
moved at a furious pace as he stroked his cock.  Her curiosity soon took
over as she pushed the door open very carefully.  She crept closer to him
until she was standing slightly behind him on his right.

   "Oh my god Jack what are you doing?" she asked with her eyes locked on
his swollen shaft.

   Before he could say a word, she knelt down on the floor next to his
chair just staring at his cock.  She had never seen a real penis up close
like this.  She had seen them in pictures and such but never in the flesh.
She was amazed He moved his hands to cover his bare cock but she
insistently pulled his hands away.  Timidly, her fingertips grazed the warm
flesh.  He stared at her in disbelief as she touched it.  She tried
wrapping her fingers around it and stroking it as he had been.  Her
awkwardness did not stop him from enjoying the feel of her touch.

   "Oh god Tandy what are you doing?" he moaned.

   "Am I doing this right?  Do you want me to stop?" she questioned

   "No don't stop.  It feels good" he choked out.

   He took her hand in his, helping her position it better as he guided her
strokes.  It did not take her long to get the hang of it.  He gripped the
arms of the computer chair as he thrusted his hips.  She noticed a bit of
milky liquid dribbling from his little split in the smooth head.  She ran
her fingertip through it, gathering some of it up.  He moaned loudly as her
finger crossed the tip.  His eyes widened as his baby sister put her finger
to her mouth and licked the precum from her finger.

   She grimaced slightly at the somewhat salty taste of it.  She then
smeared the rest over the bulbous head of his cock as she continued to
stroke him.  Jack groaned loudly as she ran her fingers over the head as
her fist moved up and down his shaft.  It was too much for him to bear. 
Thick ropes of cum shot from him, coating her palm as she continued to rub
the head.  He panted as he gripped the chair.  His body twitched as she
milked the cum from him.  Tandy giggled as she watched him.  It was the
most peculiar thing she had seen.  He gently pulled her hands away as the
orgasm subsided and his erection began to fade.

   She reached up and took a Kleenex from the desk and wiped the cum from
her hand and tossed it into the wastepaper basket.  She looked up at him
for a moment and studied his face.  He was sweating and panting still from
the intensity of the orgasm.

   "So do you do that often?" she inquired

   "Sometimes" he answered, turning bright red with embarrassment.

   "Why?"

   "I don't know.  Because I want to I guess," he answered

   "Have you ever let anyone else do that to you?"

   "NO.  Stop asking so many questions Tandy." he replied getting slightly
annoyed.

   "Fine.  I'll just tell mom and dad that you're a perv and you look at
internet porn," she said in a huff.

   "HEY...  wait Tandy.  Come on.  Don't do that," he said

   "Then don't be a jerk.  I was just curious"

   Just then, their mother arrived home from grocery shopping and called up
for the two to help her bring in the purchases.  Neither of them said a
word about what had happened for a few days.  Jack was particularly nervous
in front of their parents.  Tandy thought nothing of what happened.  To her
it was not a big deal.  Later that week she caught him again.

   It was late Thursday night when she had gotten up to go to the kitchen
for a cold drink.  She noticed the light on in his room and decided to
investigate.  Instead of finding him looking at the pictures he was before,
she found him looking at the pictures from the family vacation.  On his
screen was the shot of her sitting on the rocks at the beach at sunset in
that little pale blue bikini.  She stood there in shock as she watched him
for a moment.  She could see something in his hand but wasn't sure what it
was.

   She pushed the door open and walked in, closing it quietly behind her.
Tandy snuck up behind him as he continued to rub the object over his cock.
His breathing was rapid and shallow, so she knew he was concentrating on
what he was doing and did not notice the intrusion.  Her eyes widened as
she noticed it was her silky pink panties that he was rubbing up and down
his engorged shaft.  She let out a loud gasp, alerting him to her presence.
He immediately stopped stroking and pulled his boxers over his cock.

   "What the hell are you doing?" he asked her in an angry voice.

   "I can ask you the same thing you sick bastard.  What are you doing with
my panties and my picture?" she asked in a shocked tone.

   Jack's demeanor quickly changed.  He knew there was no way out of this
other than the truth.  He laid the panties on his desk and looked into her
eyes for a moment.  He tried to access how upset she really was.

   "I was thinking about earlier and it got me worked up ok.  It felt so
good that I got horny ok," he calmly answered.

   "So you were thinking about me rubbing your cock?" she asked as she sat
on the edge of his bed.

   "No actually I was thinking of stroking myself while I watched you play
with yourself," he replied.  "So why don't you get undressed and play with
yourself for me."

   "Really?" she paused.  "But...I have never done that in front of anyone
before."

   "Don't play innocent.  Just do it Tandy," he said in an impatient tone.

   Tandy could not deny that her brother's request turned her on so much.
She slowly began to undress, removing her little white t-shirt first.  Jack
stared at her perfect breasts as they moved with each breath.  She then
hooked her fingers into the sides of her panties and worked them down her
thighs.  She stepped out of them, leaving them on the floor beside his
chair.  He licked his lips as he stared at the neatly trimmed little heart
shaped patch of hair above her pussy.

   He watched in desperate anticipation as his cock throbbed.  The sight of
his naked sister was more arousing than he ever imagined.  He reached down
and scooped up the panties.  The crotch of them was already damp when she
removed them.  He rubbed the wetness over his cock as he watched her
position herself on his bed.  Her legs spread slowly as she looked at him.
He could see her juices already starting to seep out as the glistened on
her pink flesh.

   Her fingertips gently began to stroke her clit.  She closed her eyes and
let out a soft moan as she applied a little more pressure.  Jack began to
stroke his cock once again while he watched.  Tandy bit down hard on her
lower lip as the feel of her own touch was making her squirm on the bed. 
He wanted so badly to touch her, to feel the warm delicate flesh tremble
under his fingers.

   "Tandy...  I want you to stroke my cock again and let me do that for
you," he pleadingly suggested.

   The thought of her brother touching her most intimate spots sent chills
through her.  She shivered and nodded as she moved over on the bed.  He
laid down on his side in the opposite direction that she was.  He could
smell the sweet scent of her pussy as he leaned a little closer to get a
better view.

   He was in heaven as her fingers wrapped around his thick shaft.  He felt
her jump as his fingers began to rub her clit.  She let out a soft moan. 
He could not believe how warm her flesh felt.  His fingers drifted down to
her slick little slit.  He gently parted her pussy lips and slowly pushed
inside.  Tandy was in heaven as she felt the fingers push inside her sweet
pussy.

   It did not take long for Tandy's body to stiffen as her brother's
fingers drove her in to an intense orgasm.  He felt her muscles twitching
and her juices coating his fingers as they moved.  Jack needed to be inside
her now more than ever.  His cock ached for it.

   He pulled his fingers free from her, putting them in his mouth.  He
delighted in the flavor.  The taste of her was sweeter than any candy he
had ever tasted.  She slumped to the bed in a blissful exhaustion, leaving
her brother unfulfilled.  A mingled rush of emotions filled him.  His
muddled lust took over as he quickly moved between her legs before she
could stop him.

   She tried to push him away but he swiftly pinned her wrists down with
one hand, while the other moved to her mouth before she could protest.

   "Just calm down Tandy.  I'm not going to hurt you.  It's just...  you
feel so good I want to be inside you," he admitted.

   The tip of his cock was positioned against the velvety lips at the
entrance of heaven.  He thrust slowly into her as he stared down into
Tandy's eyes.  Her eyes widened as he sunk deeper inside her.  Both were
amazed at how incredible it felt.  Soon, her hips were lifting from the bed
to meet his.  Her leg slipped around him, pulling him in to her deeper.

   "Oh god Jack, please don't stop," she moaned as he hilted himself inside
her.

   Jack had no intention of stopping.  He wanted to keep going forever. 
Nothing had ever felt so right to either of them.  Tandy continued to buck
into his thrusts, trying to force him deeper with each stroke.  Her body
trembled, teetering on the verge of another orgasm.  It didn't take much
for him to push her past the point of no return.  As the orgasm ripped
through her, she cried aloud enough to wake their parents.

   His lips crushed against hers in an attempt to quiet her.  She forced
her tongue into his mouth, tasting herself on his lips and tongue.  This
quickly drove Jack over the edge as well.  A few strokes later, he was
filling his sister's pussy with his thick warm cum.  Her muscles milked it
from him as they continued to kiss deeply, moaning into each other's
mouths.

   He collapsed on top of Tandy, laying there panting on top of her as they
broke the kiss.

   "Oh my god Jack.  That was..." her words trailed off.

   "Incredible," he answered.  "Simply incredible."

   The two lay there, blissfully enjoying the afterglow when the door
opened.  They scrambled to pull the blanket over themselves, knowing they
were surely in trouble now.  The lick clicked on, as their mother stood
there in the doorway staring at them in disbelief.  She stepped inside,
staring at her two naked children.

   "The two of you better have a damn good explanation for this," she said
as she crossed her arms awaiting an answer as thoughts of their punishment
formed in her head.  "Now get dressed and get back to bed Tandy.  I will
deal with you tomorrow."

   Tandy quickly gathered her clothing and ran to her bedroom, completely
embarrassed.  Jack, nervously reached for his underwear before his mother
stopped him, tossing them across the room.  She closed the door and walked
over to his bed, sitting on the edge of it as she looked at her son's body.
Jack would soon learn just how much trouble he was in for.